Filter.



PATENTBD FEB. 20, 1906,

E. KEFER.

FLTER.

APPLICATION FILED JUNE 30.1904.

2 SHEETS-SHEET 1.

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PATENTED FEB. 20, 1906.

K. KIEFER.

FILTER.

APPLICATION FILED JUNE 30.1904.

2 SHEETS-SHEET 2.

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, 'and outlet opening such KARL' KIEFER, `or ci Ncinuirri, eine.

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Specication of Letters Patent.

resented Feb. 2o, 190e.

Application filed June 30.1904. Serial No. 214,733.

To all wil/0,711, it inf/ty concern:

Be it known that I, KARL KIEFER, Va citizen of,y the United States, and a resident of Cin` cinnati, in the county of Hamilton and State `of Ohio, have invented new and useful Improvements in Filters, of which the following is a specification.

This invention relates to that class ofiilters where moist compressed iibrous pulp is used.

In the accompanying drawings, Figure 1 is a cross-section and artiai View of the lter. Fig. 2 is a detail ofp the packing-plate; and Fig. 3 is a cross-section, on an `enlarged scale., through several filter elements.

In Fig. `1, A is a base containing an inlet as used in my Patent 7, 1905, Reissue No.

No.f-782,200, February B is a drum inclosing 12,347, May 16, 1905. the filter elements.. C and C are upright posts fastened on the base A..v D isa swinging yoke suspending the cover of the drum. E is a swinging traverse hinged on the upright posts C, so as to swing out similarly to yoke D. It swings into place hookingonto the upright post C with its part 1, that is cut out one half. This traverse E carries on both sides a rack F and F, the latter one visible in Fig. 2, and a pinion arrangement G, actuating the racks F and F. On the same shaft with the pinions is a hand-wheel H. The rack is guided by rollers 3 and 4, which are also in duplicate on each side ofthe traverse E. Connected to the racks F and F/ is a packing-plunger I,with`a perforated plate 5, a fine screen 6, and a central hole 7. The inlet liquid-conductors consist of large screens K for the admission of the liquid and are of f M with coarse mesh. They 'are covered with a ner ber-retaining screen 8. The outlet liquidconductors consist of coarse screens cfa smaller diameter L, also covered with fiberretaining screen 9, and a central tubular hub flanges l10 gripping the screen L. This hubM may be dispensed with. The

screen L connects with the interior of the hub M by the small holes y cation of Patent N o.

11. Like in my specifi- 7S2,200, February 7, 1905, Reissue No. 12,347, May 1G, 1905, the

inlet for theV cloudy liquid is a very narrow 'space 12, Fig. 1, produced by the tank B and theilter elements that are somewhat smaller than the tank, While the outlet for the clear liquid is in the center. l i

The bottom of the tank is covered with the large screen K, and the fiber-,retaining screen i 8, below vwhich the cloudy liquid enters and above which the iirst filter layer is packed by means of the packing-piston I, the exterior auxiliar c Yliuder N and. the interior anali-- iai'y cylinder i). The packing-cylinder N has a diameter somewhat smaller than thel y tank and may be preforated or noti It is in troduced into the tank B and iinds afounda` tion on the top of the screen K. v The iilter mass is introduced in a state mixed with f good deal of water and then pressed by the piston I and the pressure arrangement above, so that a ring-shaped filter layer is formed between the auxiliary cylinders N and O and the screen More pulp ter the outlet-opening. Thereupon the seo-l ond iilter layer is produced..

introduced, which properly centers the hub M. by its lower prolongation 13, which can enf .7o plate and the packing-piston-l should be used `at `the center,1sor that the lilter layers are more dense attheir After Athis. the 1:

auxiliary cylinder N must be taken out of the machine and a screen K inserted, upon which N is to rest again during the formation of the next two filter layers, and so on. The top layer maybe solid or with a central hole, such as is known. in the art. The filter layers may extend overthe tank B, and they may be then compressed by the cover hanging on the yoke D. At the saine time the filter is to be closed, similar as in my speciiication of Patent No. 782,200, February 7, 1905, Reissue No. 12,347, May ie, 1905.

After using the filter it can be taken apart by means of 'the lifting-tool P,(for which a special patent will be applied,) which catches beneath the hub M and tears the 'filter layers apart, as indicated by the line of fracture 14. For this purpose the hubs do not touch each other. If it isdesired, however, to support the iilter centrally by letting the hubs touch each other, this may be done.

The matter described in this specification, but not claimed, is claimed in my application Serial No. 233,647, iiled November 21, 1904.

What I claim as new and useful, and desire to secure b Letters Patent, is-

1. In a lter, the combination of a base, a drum rigidly connected to said base, of'upright posts fastened onto said base andrai-rying a packing arrangement and a closing arrangement for the drum, each arrangement ico durin 2. n a filter, the combination of filtereleladapted to swing out of the Way of the other its use.

ments built up in the filter, forming a continuous filter layer, means for forming said filter layers and means for removing said filter layers in pairs. i

3. In a filter, nal drum, a series of filter elements connected With each other so as to form one continuous filter mass, and more com ressed in the een ter, -With inlet and outlet iquid-conductors. 4. In a filter, the combination of a' drum and tWo upright posts connected to said.

, of a press arrangement for the purpose of producing 'a series of filter elements, constitutingone continuous filter layer, with a central s ace-former of a height only part of' that of tiiedrum and ada ted to be' raised as the filter elements are u iltup and finally' extricated.

6. 'In a filter, the combination of a rigidl such base, al of a yoke and base, two posts fastened onto drum mounted upon the base, cover arran ement hinged vertically to 4one post and locing into the other one, of a press arrangement hinged vertically .to the latter post and locking mtothe previous post, each the combination of an enterarrangement adapted to swing aside during the use of the other one.

7. Inia filter; th combination of a series of filter layers, interlaced in annular areas and separated outside of such area by liquid-cork ductors consisting each of one coarse screen and one fine' screen, said coarse screen incon'# tact with the lowenfilter layer, and means for 4 5 supplying and draining said liquid-conduc4 tors.

` 8. .In a filter, .the combination-of a casing; I Y* a series of filter elementsfmteriacedmmon Y each other. 1n .annular fareasff-and `vseparate' 5-,0

outside of such area by inlet andoutletliqf uid-conductors, -one'oiithe series -ofaconducel tors communicating with the centralo enin formed by Athe-said filterflayersyanda a e to be gripped by a `liitii-ig,'insrurnent.- om-5 5 above. 9. -In a filter, Vthe combination ofqtwofilter layersfinterlaced anA annulararea-and-.sepw rated outsidewof such arear-byia liquidi-conny ductor, consistin of a metaiinon-fiber-retaiin'f-'-o ing openework at.disk-,and1=' a singlei metail fiber-retaining'iscreen, Athe. latten. inf contact with .the-upper filterla er and theformer in. contact with the lowenfilter Leyen, both metalci constructions touchingea'ch other-'5 withineans HS 5 of suppfilfganddralnin said-filter layers'. Intestimony Whereofl havesigned-my-J name to this yspecification in/thepresence oi; two subscribing. Ivslnltnesse's. .i

KABE-KIEFER.:

Witnesses::

" G. W. Wennen,...

H; L. RMmiAU.- 

